2000 GMC Yukon Driver's Power Window

ABBATSA

MEMBER

2000 GMC YUKON

V8

4WD

AUTOMATIC

125,000 MILES

The driver's power window will not operate down or up. The other 3 windows operate from the driver's switch control. I removed the switch control and there is no noticeable problem. I was hoping I can test the switch with an ohm meter but there are many pins. Is there a way to test if the switch is bad or if it's the actual window motor?
Thanks
Sam

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Wednesday, May 13th, 2009 AT 7:54 PM

1 Reply

DAVE H

MEMBER

Hello .. thanks for the donation .. much appreciated

There are 2 type's fitted on this year of Yukon, old style and new style !! ... I have included the test's for both type's .... hope this helps .. let me know

OLD STYLE
TEST 2: LEFT FRONT WINDOW INOPERATIVE
Turn ignition switch to RUN position. Using a test light, backprobe between master switch assembly connector C2 terminals "A" (Dark Blue wire) and "E" (Brown wire). See Fig. 2 . Move left front window switch on master switch assembly to UP and DOWN positions. If test light illuminates in both positions, go to next step. If test light does not illuminate in both positions, check master switch assembly connector for poor terminal contact. If connection is okay, replace master switch assembly. See WINDOW SWITCH under REMOVAL & INSTALLATION.
Disconnect left front window motor connector. Connect a test light between left front window motor connector terminals "A" (Dark Blue wire) and "B" (Brown wire). Move left front window switch on master switch assembly to UP and DOWN positions. If test light does not illuminate in both positions, go to next step. If test light illuminates in both positions, check left front window motor connector for poor terminal contact. If connections are okay, replace left front window motor. See WINDOW MOTOR & REGULATOR under REMOVAL & INSTALLATION.
Check for open in Dark Blue wire between master switch assembly connector C2 terminal "A" and left front window motor connector terminal "A". Check for open in Brown wire between master switch assembly connector C2 terminal "E" and left front window motor connector terminal "B". See WIRING DIAGRAMS . Repair as necessary and retest system.